With the FOX run on X-Men officially over now that it's part of Disney, and Kevin Feige pretty much saying they'll reboot the property from scratch to integrate into the MCU, meaning none of the old actors will reprise their roles, which X-Men villain that FOX never adapted in their movies do you hope to see? We've seen Apocalypse, Dark Phoenix, Magneto, William Stryker, Mystique Pyro, Toad, a version of Mastermind, Silver Samurai, Emma Frost, Azazel, Sebastian Shaw, Sabretooth, Lady Deathstrike, and Blob all adapted in FOX's movies to varying success. Here are the most prominent who never appeared in any movies.
Avalanche: Dominikos Petrakis is a mutant with the ability to generate seismic waves from his hands. He most often uses this ability to create tremors and earthquakes.
Deathbird: Cal'Syee Neramani is a Shi'ar warrior and Empress Lilandra's older sister. Exiled from the Shi'ar Empire, Deathbird sought to reclaim her throne which put her at odds with Lilandra's allies, the X-Men.
Red Queen: Madelyne Pryor is a clone of the X-Man Jean Grey and the first wife of Cyclops.
Mister Sinister: Nathaniel Essex is a genetically-altered human and scientific genius, and one of the X-Men's deadliest enemies. Sinister first rose to prominence when he ordered his assassins, the Marauders, to hunt down and kill the sewer-dwelling mutants known as the Morlocks. He later played key roles as a mastermind in the shadows through events such as Inferno and Messiah CompleX. Mister Sinister has mastered genetic cloning, which he uses to create clones of the Marauders and others.
Mojo: An obese, yellow-skinned alien from a race known as the “Spineless Ones,” Mojo is a slaver who rules the Mojoverse, a dimension obsessed with television programs and celebrities.
Omega Red: Arkady Gregorivich Rossovich was a serial killer who underwent experiments that equipped him with retractable tentacle-like coils in each of his arms.
Sauron: Dr. Karl Lykos is a human geneticist who was transformed into a pterodactyl-like humanoid. As the winged Sauron, Lykos is an energy vampire who must absorb the lifeforce of those around him for sustenance. If Lykos absorbs a mutant's energy, he is transformed into Sauron, and his savage mind takes over.
Shadow King: Amahl Farouk is an Egyptian mutant with powerful telepathic abilities and the power to possess other beings while on the Astral Plane. The Shadow King has played a key role in Storm's origin, and has often faced off against Professor X.